why it deletes all the contents of the file when I add" > file" after sort? "sort -k2 file > file".If the name already exist then we dont add it. how should we do?Thank you!
If you're saying that only want to add the given name to your file (without checking to see whether or not that name was already in the file, AND you don't need the line where it was added, the way to do that would be:
and if you wanted to only add that name if it was not already in the file:
When you use the command line:
the shell sees the redirection (> file) and creates a file named file (destroying any contents that may have existed in that file) and then starts the sort utility. The sort utility will then open the file named as a command-line argument (in this case also named file which, after the shell has redirected the output, is now an empty file).
This User Gave Thanks to Don Cragun For This Post:
Hi,
I have a huge file & I want to add a specific text in column. But I want to add this text from a specific line number to a specific line number & another text in to another range of line numbers.
To be more specific: lets say my file has 1000 lines & 4 Columns. I want to add text "Hello"... (2 Replies)
Hi,
I am using below command to display the number of line, but its returning no of lines along with file name.
But i want only no of line in the variable p.
Please help me on this?
p=`wc -l "text file"`
echo "$p" (6 Replies)
I having file below o/p
ibapp311dg,,20480,s,,,,,,,,,
test,,20480,s,,,,,,,,,
test,,20480,s,,,,,,,,,
ibapp311dg,,20480,s,,,,,,,,,
I want to to chk unique word line in the first field seperated by , as well as addup corressponding the number in field for each unique word like
ibapp311dg... (8 Replies)
Hello
Wondering if anybody may be able to advise on how I can filter the contents of the following file:
<object_name>-<version> <Instance>
GM_GUI_code.fmb-4 1
GM_GUI_code.fmb-5 1
GM_GUI_code.fmx-4 ... (7 Replies)
Hello Everyone.
I am trying to display contains of a file from a specific line to a specific line(let say, from line number 3 to line number 5). For this I got the shell script as shown below:
if ; then
if ; then
tail +$1 $3 | head -n $2
else
... (5 Replies)
I have a text file that has data like:
Data "12345#22"
Fred
ID 12345
Age 45
Wilma
Dino
Data "123#22"
Tarzan
ID 123
Age 33
Jane
I need to figure out a way of adding 1,000,000 to the specific lines (always same format) in the file, so it becomes:
Data "1012345#22"
Fred
ID... (16 Replies)
Hi
I want to delete a line from a txt file for which the line number is user input. Say when user selects 19, the 19th line would be deleted from the file. Can anyone please provide me with a sed one liner for the same... I tried sed -i. The interaction would be like this
Enter the line to... (1 Reply)
Given a file like this:
abc
def
ghi
I need to get to
somestandardtext abc1 morestandardtext
somestandardtext def2 morestandardtext
somestandardtext ghi3 morestandardtext
Notice that in addition to the standard text there is the line number added in as well. What I conceived is... (4 Replies)
Hi all,
I have 20 files (file001.txt upto file020.txt) and I want to read them from 3rd line upto end of file (line 1002). But in the final file they should appear to start from line 1.
I need following kind of output in a single file:
Filename Line number 2ndcolumn 4thcolumn
I... (14 Replies)
Discussion started by: bioinfo
14 Replies
LEARN ABOUT DEBIAN
wolf4sdl-wl1
WOLF4SDL(6) Wolf4SDL WOLF4SDL(6)NAME
wolf4sdl - An open-source port of id Software's classic first-person shooter
SYNOPSIS
wolf4sdl [options]
wolf4sdl-wl6 [options]
wolf4sdl-wl6a [options]
wolf4sdl-wl1 [options]
wolf4sdl-sod [options]
wolf4sdl-sdm [options]
DESCRIPTION
Wolf4SDL is an open-source port of id Software's classic first-person shooter Wolfenstein 3D to the cross-plattform multimedia library Sim-
ple DirectMedia Layer (SDL) (http://www.libsdl.org). It is meant to keep the original feel while taking advantage of some improvements.
The wolf4sdl-wl6, wolf4sdl-wl6a, wolf4sdl-wl1, wolf4sdl-sod and wolf4sdl-sdm binaries start the Wolf3d Full v1.4 GT/ID/Activision, Wolf3d
Full v1.4 Apogee (with ReadThis), Wolf3d Shareware v1.4, Spear of Destiny Full and Mission Disks and Spear of Destiny Demo games, respec-
tively. The wolf4sdl binary is a symbolic link to one of these and is handled via Debian's update-alternatives mechanism.
OPTIONS --help This help page
--tedlevel <level>
Starts the game in the given level
--baby Sets the difficulty to baby for tedlevel
--easy Sets the difficulty to easy for tedlevel
--normal
Sets the difficulty to normal for tedlevel
--hard Sets the difficulty to hard for tedlevel
--nowait
Skips intro screens
--windowed
Starts the game in a window
--res <width> <height>
Sets the screen resolution (must be multiple of 320x200 or 320x240)
--resf <w> <h>
Sets any screen resolution >= 320x200 (which may result in graphic errors)
--bits <b>
Sets the screen color depth (use this when you have palette/fading problems allowed: 8, 16, 24, 32, default: "best" depth)
--joystick <index>
Use the index-th joystick if available (-1 to disable joystick, default: 0)
--joystickhat <index>
Enables movement with the given coolie hat
--samplerate <rate>
Sets the sound sample rate (given in Hz, default: 44100)
--audiobuffer <size>
Sets the size of the audio buffer (-> sound latency) (given in bytes, default: 2048 / (44100 / samplerate))
--ignorenumchunks
Ignores the number of chunks in VGAHEAD.* (may be useful for some broken mods)
AUTHORS
Wolf4SDL v1.6 ($Revision: 232 $)
Ported by Chaos-Software (http://www.chaos-software.de.vu)
Original Wolfenstein 3D by id Software
This manual page was written by Fabian Greffrath <fabian+debian@greffrath.com> for the Debian project (but may be used by others).
1.6 December 2010 WOLF4SDL(6)